<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <link type="text/css" rel="stylesheet" href="externalstyle.css">

    <link rel="stylesheet" href="style.css">
</head>

<body>

    <!-- 外部样式表 -->
    <!-- https://developer.mozilla.org/zh-CN/docs/Learn/CSS/First_steps/How_CSS_is_structured -->
    <!-- 外部样式表是指将CSS编写在扩展名为.css 的单独文件中，并从HTML<link> 元素引用它的情况： -->

    <h1>
        Hotel booking from the comfort of your rooms.
    </h1>
    <p>
        Compare and book from more than 5000 hotels.
    </p>


    <h1>Hello World!</h1>
    <p>This is my first CSS example</p>
</body>

</html>